If Sweetwater gets in a Caprice that weighs in at 8.5 lbs I may go for it.
I own one of each. The neck profile is very similar. If there are differences, they are very minute...at least as far as I can tell. The main difference is in the finish. The neck on the Caprice is a Satin Urethane finish as opposed to the Gunstock oil and wax blend that the Sterling and Big Al use. The Sterling/Big Al neck is the best bass neck I've ever played.