hey, they are only tires, so use whatever works. For me, the Gatorskins roll reasonably well, they have fairly good flat protection (I ride about 4-5000km per season and usually get about 1 flat per year) and they last a reasonably long time. I am a light guy but I do nearly always have a pannier or two on my bike, so they work well unloaded or more or less loaded, I just change the pressures.
I've got a lot of two wheeled experience, bicycle, motorcycle, a bit of racing experience on motos, drive and slide a car in winter up here in Canada, and have a pretty good feel for traction, and can't honestly say that the Gatorskins have ever been a worry to me, they just work ok for me and last a good long time.
I would hazard a guess that a rear 28mm gator on my bike lasts about maybe 7000km before it starts getting a bit squared off and maybe starts to get a thinner tread, but again, Im real easy on tires being a light guy. This summer I was on a week long supported trip and there were tons of sections with dirt roads and really bad pavement sections with holes, rough patches, you name it, and the gators at a nice low pressure, maybe 80 or so, handled wonderfully and on every downhill curved section I passed all the roadies who had to baby thier expensive light road tires, and many of them getting pinch flats, but the gatorskins worked a treat. Sure, part of that was the right pressures for the conditions, and I like technical stuff and really get off on pushing it to the edge of traction, but they worked great. Wasnt wet , but its just an example.
in the end, you have to ride diff tires yourself and depending on your riding experience, take what you will from that, but remember, tire pressures make a HUGE diff in how a tire feels going around corners. This cannot be understated.
again, safe riding
Ultimately one has to ride on a given tire at diff pressures to get a feel for how they ride, so safe riding on whatever you ride, thats all that matters.