Hope you weren't waiting for a revelation for my patch test. LOL Absolutely low tech.
I have used WD for years for patch lube with good results. The only thing is the WD does dry out in a reasonably short period of time. I use the quick shots. I guess that is what they call them. Anyway the patch is exposed to the air until your ready to load which means it dries out. I usually just squirt it with WD and a cheap atomizer and load. No problem just playin looking for maybe something that will stay lubed for a week or so exposed to the air.
My "test" was pretty simple but kinda close to the way I hunt with my patches. I just soaked them in WD, olive oil, bees wax and a mixture of bees wax and olive oil put them on a paper towel and just let them sit. I was only lookin to see how long they, appeared, to stay lubed. They all dried out, well the straight bees wax didn't dry out but was real stiff from the beginning. The bees wax and olive oil patches are still good to go. I won't use them this year, since deer starts Monday, but after season I'll play with them and see how they shoot. The WD patches shoot great.