First of all I want to congratulate MSaternus for providing some excellent pictures that help explain this method of changing grips.
Now that I said that...
I own all the tools necessary to install with air (I am a carpenter) but still go at it the old fashioned way.
Now maybe I am not as dexterous as most however it always takes me more than a few seconds to properly align the grip. That I would have to keep shooting air into the grip to get the seam straight and whatever alignment mark is on the grip to be where I want it seems like too much work.
As long as the solvent is still wet I am able to make the adjustments quickly and accuratley.
ps - MGS - you posted:I know quite a few club makers that use the tapeless system and have little to no problem with slippage. Although some people do prefer to have their grips built up in different manners.
Little to me seems that there is at least one problem. As a clubmaker if I could not be 100% confident that the grip that I installed was not going to slip I would not do it.
In my 10 years of installing grips with fresh tape and solvent I have never,ever had a problem of a grip slipping/twisting.
In fact the only instance I can think of turned out to be a bad epoxy on a head and it was mistaken for a loose grip.