I have read the same thing, Here is my thinking, you will be using T-88 for other structural members so why not use it for everything to ensure proper bonding and every possible connection, Like others have said you can use any glue you like, just make some test bonding and hit it with a hammer and see what happens and what is your comfort level, this is something that it is ultimately up to you to decide, Its your butt in the seat several hundred feet above in the air.