So I know these have been around forever, but I recently began playing with vertical foregrips again and am debating getting one of these. It's a bit pricey to just try out though so I wanted to ask if anyone has any first hand experience with these and what they thought of them. Good? Bad? How do they stack up against straight vertical grips? I've got an old school KAC. Nothing miraculous but am kinda digging the feel now that I've unearthed it again. Only mounts to picatinny so requires a pic section to mount to my Mlok stuff. Just curious about the ergo's of the Fortis. Specifically the full vert grip, not the shorty.