Grover Rotomatics are lovely and smooth in operation and the high gearing ratio allows accurate tuning. They are a drop-in replacement for the Gibson Deluxe tuners - those with screw-down collars - but guitars with press-fit bushes will need the holes reamed out to fit.
One word of caution. As a guitar repairer I see a lot of Gibson guitars with broken headstocks and it seems to me that a high proportion are fitted with Grover tuners. I believe that the greater mass of these tuners adds inertia to the headstock so that it may be more prone to break in a fall, even whilst in the case.