If you are a Grand Fap Master then your hand dexterity is probably of ninja levels to which us mortals aspire to.
On my mouse the reload and melee buttons are just under my thumb and it is easy to just rock my thumb slightly to do one or the other. I still use the keyboard sometimes.
For the sniper distance, it is something that is usable when you are strategic waiting and going for long distance snipes. I find under those circumstances it does help with bullet drop. On something like zavod then yes, it isn't worth it.
On my mouse the reload and melee buttons are just under my thumb and it is easy to just rock my thumb slightly to do one or the other. I still use the keyboard sometimes.
For the sniper distance, it is something that is usable when you are strategic waiting and going for long distance snipes. I find under those circumstances it does help with bullet drop. On something like zavod then yes, it isn't worth it.