Walt,
I had a related post a few weeks ago. Traditional Bowhunter Mag did a test a few months back and claimed that limbsavers are much more effective out toward the tips of recurve limbs and the speed loss is insignificant. I've tried them at both locations and tend to agree with them that they quiet noise/vibration better at the tips, but I do not have a chrono to verify their velocity claim. I don't think to many others believed it, as most responders still preferred the fadeouts. I had two break off from their adhesive backing, which stayed attached to the limb tip. SIMS felt mine were being hit by the string on release and recommended moving them down the limb until I had approx. 1 inch of clearance between the rubber stopper and the string at brace (if you want to try it yourself). Mine are the solid "mini's" without grooves, but I doubt orientation would matter. I was able to detach and relocate mine without messing up my limb finish, but that may depend on the bow.