Hi,
I have a mtb frame of the other early bonded frame maker, Vitus. I never asked myself whether it is any good ....BUT it sure is cool. Same applies to above Alan, even though I do not like the graphics really much.
I once heard on the Vitus that those with alu tubing are a bit tougher. The reason is that the alu tubing can be heated when making the conection. This then results in tighter fit when cold again. Don't know whether the same applies to alu vs carbon Alans.