My first experience with Ml'er was with a T/C Hawken, then a Lyman GPR. When I thought of custom gun, before I owned a couple of original guns, I did all I could trying to figure out how to get that hooked breech. Then after having those original guns and shooting them,I found the hooked breech to be an advertising hype and really kind of a PIA in comparison. Now I have shot so many more shots through these none hooked breech guns, I find they are much easier to maintain IMHO, that is why I called the hook breech advertising hype. I also had one gun built with a keyed barrel (40cal. Beck). I did it from another historical angle, though pinned is very much more common and for a reason. I have not taken the barrel out of the gun but once. Now, I have only had it 5 yrs. so it is possibly something to do again. With a properly coned and positioned vent and a good lock, I doubt if you will no the difference between the ignition speed of this or a patent breech. Again, IMHO, the patent breech just becomes another cleaning bug-a-boo that is not needed. Sometimes some of these designs were created to improve the breed and they worked. Sometimes some designs were answers to a problem that wasn't ever asked for to be corrected, except for more marketing hype.
For me, traveling for something I want is a no brainer. I don't do everyday, I just do it when it is something I want. After all, it is a possibly a once in a lifetime event. When I went hunting for bear and elk, they weren't going to bring the hunt to me, I had to go after it. The whole event builds memories, the people, the country and the time spent with people we want to be with. All are something we will all cherish from our nursing home bed.(I hope NOT!)
Heck, I am so sure you will be happy with a gun built in the tradional way, I am tempted to box one up and send it to you for your to shoot and experience it yourself. The only thing I would ask is, DO NOT take out the vent to clean. It is not something I do unless it is wore out and it isn't for many 1000 more shots.