At 30 oz, the 624 is going to be hard to beat without giving up stability IMO.
I’ve been wondering this as well. I really like the 624 and the weight savings may not be worth the trouble.
My main thought was to have a tripod/Kowa 554 combo, that I never hesitate to throw in a pack and take with me.
Right now I only take my Kowa 773/Slik 624 on specific hunts because of the added weight and bulk.