I own a G4S and a G4SL. I flashed TeamForce v2 on them immediately and noticed that on neither device the vibrate function works any more. I am sure on the G4SL the vibrate worked in the stock 4.2.2 it came with.
On the G4S I tried going back to several custom and stock roms (4.2 and 4.4), but vibrate never worked again. Maybe the motor is defective, or the ROM broke something in software.
Has anyone else experienced this too?