In reply to jazzyjackson:
Not sure how putting a gilet over a PS top takes longer than putting on a hybrid jacket? Think about it, in actual UK conditions and usage. If it's cold, you'll have a PS or similar top on already whislt you are moving. When you stop or really slow down you put on either a shell or an insulating layer.
As for the weight, not really a factor depending on your system. With the hybrid you'll need a decent baselayer underneath for when you take it off (ie when active and too warm). The PS could be the baselayer so you just take the gilet off, removing the need for a baselayer and that weight.
I just think that these are too specialised, for too few conditions and activities that are actually encountered. Each to their own though.
Post edited at 14:03