call it personal preference, but i find the fixed blade more comfortable for longer use and safer when up on a ladder or in a tree for pruning (==you can use both hands for climbing and need only one hand to reach and "operate" your tool (I "" unlock" my saw before getting up and carry it loosely with the handle on top of the scabbard); my Pocketboy had the advantage of being more compact (and went everywhere with me) which made it better for hiking when i'm not processing thick pieces of large amounts of timber
Good post mate, my feelings exactly. Even ground working there’s a need to put the saw down to use your hands. Dropping the Zubat into a scabbard is a lot easier than folding the BigBoy and putting it on the ground or into a pack.