I have the FNX tactical and I bought it off the EE. Triangle RMR works awesome on it and its the most accurate pistol I have shot. The safety issue is not a problem, I have never decocked it by mistake when taking the safety off. It takes considerably more pressure to decock then just turn the safety off. Never shot it gloves, and its big but less then I thought. I really have no complaints at all, if you like small pistols it will feel large, but its not pretending to be small either. Never had an issue with the squishy grip magwell, but I am not shooting it in any extreme heat either.
It gets heavy when you attach a bunch of tacticool stuff on it, like the sight and I have a TLR1 on it as well, but I really don't mind the weight...