I am using the V4-L with the CM2 base, a 7cm extension and the MongoosT-50CM2 grip which I guess is about the same height as the Warthog grip?
With the V4-L you have more options to place your setup vertically - base, extension (7cm) and grip together have ~44cm of height
Might be that with the V4-s you end up too high.