My first DSLR was a Canon t2i, and from that point forward I used battery grips. I got used to the feel and size. These days I have both the Canon 5D mk iii and Canon 5DS, both with grips.
As my camera pack is nearly maxed, I considered removin the grips to reduce bulk and start shooting with body and single battery. I already have a good size Lowepro pack that holds 2 bodies with 6 lenses, so a larger pack won't be my solution. Reducing volume slightly appears to be a better path.
Have any of you photographers with Canon 5D mk iii, iv, 5DS or similar, made the switch and removed your battery grips for your regular routine?
Were there pros or cons you noticed that were significant for you?