Even with a thin profile rail a 10:00/11:00 light mount it's difficult to manipulate a push button tail cap with both hands. I haven't tried a dual activation switch like the SureFire SR07 D-IT yet, but I thinl it may be awkward to activate both at the same time with either hand. Your best option maybe either run a separate tape switch, one at 12 O'Clock, the second at 1 O'Clock position or buying a Steiner I2 9007 IR light/IR laser, D2, A3 or ATPIAL-C. IMHO it's paramount to be able to activate your IR laser and IR light at the same time consistently with either hand.