I have stained Ramrods to make them " match " the stock , and I have then coated them with Tru-oil. I do think it helps keep the rods clean and free of debris, like microscopic bits of silica, which can then wear your bore down.
I seal the rods, now, since I had a new rod, that was not sealed, swell up on a very rainy November day when I was out in it all day long. I could not pull that rod out of the pipes until the wood dried. In effect, I had no rod in the field that day, and the only shot I would have been able to shoot was the one I loaded in the barrel first thing in the morning.
I reserve my wooden ramrods for use in the field. I use my Range rods, made of steel, brass, or aircraft aluminum, for most of the loading chores at the range. The Range rods have muzzle protectors on them.
If you are working with a new piece of hickory, make sure you pin the ferrule you affix to the end to allow you to screw in a cleaning, or loading, jag. I buy jags that have steel threaded screws in them, NOT brass.
And, don't hesitate to use a file to reduce the diameter of the jag to marry to your particular bore diameter. Just chuck the jag in a drill press, or even a hand drill that you can then hold in a bench vise, turn on the drill, and use the file to cut the rings on the jag down to size.
I like a " stepped " jag, with the forward ring the smallest, and the rearmost ring about .010" below bore diameter. The front ring, or " band " should be about .030" smaller than the bore( land to land) diameter. That allows the jag and patch to slide over the crud as they are pushed down the barrel, but bunch up the patch and pull out the crud as the rod is withdrawn.
Sometimes the diameter of the rings have to be reduced a bit more, because the cleaning patches being use make that too tight a fit. Put an angle on the rings, from front to back, so that the rear end of each ring acts like a fish hook, grabbing the patch to pull it out of the barrel.
I don't understand what you mean by " conditioning". There are old wives tales about soaking hickory rods in Kerosene for a month to make them more supple. All that does is make your Ramrod smell like Kerosene for the next 6 months, and you find yourself leaving the rod standing in a corner of the garage during that period. A good hickory rod, with NO run-out of grain, is very flexible-- certainly as flexible as you ever need for a ramrod. It should last a couple of lifetimes, particular if you seal it with a good stock finish oil.
I do wash off the rod after each shooting session, with soap and water. The first couple of years I own a rod, I will annually put an additional coat of stock finish on it, and let it dry before putting it back in the stock. After several years, it seems to only need a new coat of finish every 5 years or so.
I clean the wooden rod so that its feels as smooth as a baby's bottom. That way, I know the wood is not carrying hard substances that will file at the muzzle of my barrel, and destroy accuracy. Oh, I have learned to use my thumb and fore finger on my off-hand to act as a guide when I put the rod down my barrel( when cleaning ), keeping the rod from rubbing against the muzzle as I am pushing it down the barrel. I do the same thing, alternating hands, when I use a hand over hand technique for loading the gun, and center the rod when I am pulling it out of the barrel. I want to leave NO stock finish, and NO wood on the muzzle of the barrel. If I can accomplish that, there will be no rubbing on the inside of the barrel, either.