hmm not sure about any extra stress on anything, why are you jumping on your gear lever anyway?
if your changing witout a clutch (which i hope you are if your giving it some stick) it only takes a little bit of pressure to click it down into the next gear.
i changed mine ages ago, i had never ridden a bike with reversed pattern, and i still havent fucked it up yet.
if its harder to change gear with it you need to look at why? it should be just as easy to have it one way or another.
oh and ive had ppl ride my bike, all of them have never used reverse pattern b4 and one of them i forgot to tell. and they never fucked it up at all.
i was always missing gears and struggling to find neutral, AND forgetting what gear im in. swapping to reversed seemd to fix all that for me anyway.
each to their own.