Um, first of all, Belt grip - do what it says and dont use it on ribbed or multi V belts. Belt grip is designed to work on higher face pressures than you get with these style belts, all it will do is cause your belts to wear out faster.
Secondly, check your air conditioning clutch. Looking at the face of the compressor, you will see that when the air con is off, the centre of the clutch should stay stationary. If the clutch is on its way out it can drag when you start up.
Fan clutch - If this is the problem they usually get more free as they deteriorate, not bind up. You should be able to feel a slight resistance when you turn it by hand (with the engine NOT running) but in my experience, like I said, when they start to let go they get easier to turn, not binded up. Maybe check and make sure there is no movement in the hub of it though - if the spigot is worn it may be letting the fan come in to contact with the shroud.
Lastly, make sure that the belts haven't been over tightened, as this can cause the bronzed bush in the water pump to bind and wipe the shaft. Deflection should be as per the manufacturers recommendation.