I had a false start yesterday as the glue didn't set. I am told it was my fault, but I'm not so sure. Anyway, I bought some epoxy glue in B&Q and they are now stuck fine. They have totally rejuvenated my CLX. It was knackered before! Really smooth movement and a good grip when clamped.
So, for me, the clamps are a resounding success. Not sure about the glue, but I wasn't buying glue so not too bothered.
I am in the market for a new pole soon. Not decided yet between a CLX22 or SLX25, but for me now the Gardiners pole is practically a no brainer.