Tape and glue is good.
Definitely do not fall for the trap of the Effetto Mariposa Carogna tape. Totally worthless. It was fine for a couple races then kept failing. It cleaned up so nicely, though. I really wanted it to work.
Tape and glue is good (and I use it), but I have seen enough success in my area with the Carogna tape that I wouldn't call it worthless. Personally, I just wrapped up my 3rd season with PDX tubulars attached to aluminum rims by the same Carogna tape put on in September 2016 (very last minute before Jingle Cross). I had 10 or so races on that wheelset alone this year and at 190+ lbs and low/mid 20 psi, I'm a good candidate for rolling (or burping) tires. Those wheels saw horrible things this year in the CHI CX Cup. I never had enough reason to rip them off and glue them the last few years because they just work. I had a set with the Belgian method and the tires were stuck super tight when I sold them, but that took days and a surprising amount of $$.
I wouldn't hesitate to recommend it for CX to those that want to mount their tires themselves and don't have any background gluing. I don't think there's a shop within an hour of me that I would send anybody to for gluing tires either. It costs a few watts, but it sure beats riding wheels with hops or losing tires entirely.
It's way easier to screw up a glue job than it is with Carogna tape. I said it somewhere else, but the entire Carogna tape process took under 20 minutes for both wheels. Clean the rim with alcohol, cut tape to length, put on rim, pull both edges of tape off slightly, mount tire with a tiny bit of air (so easy to straighten tires with this method), pull edge of tape from underneath, and inflate to max pressure. I raced them a day later. Been racing them ever since.