I guess some people prefer hex bolts where possible, can understand that.. although i suppose vw used allen head carrier bolts there for a reason.
In my experience i'm no less confident when faced with either type, and well.. both can prove difficult if neglected or misused by a previous owner.
Funny thing is i've just restored a motorcycle and it does give you a good insight into why and what type of fixings/fittings are used in various places, various components etc...
That said.. good job done anyways, hope mine goes as well.