I installed Bobs Knobs the other day, a recent birthday present from a friend.
After foolishly following the instructions and finding I couldn't work out how in the world to reach collimation once they were all in, I followed my instinct on how to install them and got it working nicely.
After having put all the Meade screws back in, and collimated the scope roughly, I then replaced one screw at a time and each time collimated the secondary, pointing at star. By doing this I didn't completely lose all reference to where a good alignment should be.
Will be interesting to see how useful they are and that they hold collimation as well as the Meade screws. I didn't have a particular problem with using the allen key but these are bound to be easier.