Yeah, I really like the fixed plier concept, especially for a heavy user. The pliers feel much sturdier than many dedicated pliers I have, and they really feel like they could handle just about anything and come back for more.
I don't mind the extra bulk, especially if I am expecting to need heavy duty pliers. If I doubt I'll need anything too serious, then yeah, these might seem too awkward, especially if you are targeting the person who only has one tool.
For folks that have a choice or need super heavy duty pliers, I think the SOG and SwissGrip are unparalleled.
Def