Matt has a point, however Shark made this suggestion without looking at the +1 SPECIAL perks, which are usseles right now.
If you wish to balance accordingly you could always choose to buff the perk by giving +2 str for weapon handling and only +1 str for "resisting knockdowns". That +1 str will only function if said person takes stonewall in any case, something a sniper is unlikely to do.
Shark, not all snipers use jet by the way. There are many reasons not to take an additional 15% DR cut. There are also sniper builds out there that are focussed on reaching "full potential" at a lower level, meaning that they come with extra int or weapon handling.
So please be carefull with making such statements, as they are often simply not true.