If you don't like using the Dutch buckle or a marlinspike hitch to hang the whoopie sling onto just get/make the whoopie slings with a Dutch whoopie hook instead of the bead in the big adjustable loop, put a shortish continuous loop on the end of the hammock, tie the whoopie sling fixed eye to the tree strap, then just hook and unhook the whoopie hock to attach and detach the suspension - no MSH, no Dutch buckle, and no whoopie sling falling off the MSH while adjusting the length
note I have no association with Dutchware or Dutch other than having camped with him a time or two in the somewhat distant past and currently I don't use any of his hardware bits for my suspension - I have moved on to UCRs larksheaded to the hammocks which are removed by loosening up the larkshead from the end of the hammock - I have found this approach to be the lightest usable approach for me.