I've said it before and won no friends in the process but here it comes again, so brace yourselves:
The SFA is neither fish nor fowl. It doesn't do anything as well as alternatives. It is too big and heavy to do hatchet work and too small to be of use as a 'proper' axe. The GB
Scandinavian Forest Axe is a much, much better option if you intend doing regular
axe work. Axe work is not the same as hatchet work though, and I reckon the vast majority of SFA's are well loved and very, very little used.
Unless you do a lot of regular wood harvesting and processing then a saw and knife is hard to beat as a combo. A saw, knife and small hatchet is a great do-it-all outfit which offers a degree of flexibility and backup in the event of one of your pieces of kit failing spectacularly.
I only use my larger axes when processing a lot of timber, usually when helping some of the woodsmen on a couple of local estates, in exchange for which I get to process some of the cleared lumber for longbow staves. If it wasn't for that I wouldn't ever use an axe larger than a small hatchet for anything. I'd still buy and own a few though...
A pocket rocket hatchet (everyone please note; I refrained from posting my favourite little hatchet pictures

) take almost no room and brings no noticeable weight penalty to your pack or jacket.
Given how much a mid-size axe costs I would rather see more people make a more informed decision when they buy one. The SFA was promoted as
the bushcraft axe for years but it fails the brief in my opinion and has now been superseded by Ray's slightly longer, slightly heavier signature axe, which is now being pushed as
the axe for bushcraft.
I think the SFA is good, but I certainly don't think it's anywhere near as great as some would have you believe.
That could possibly be said for GB axes in general - I guess much of the underlying publicity is because yes, they are good, and because most folks tend to have little or no basis for comparison, since axes haven't been a mainstay tool for a long time in the UK.
You should also keep in mind that all of the GB axes are great on softwoods and pretty good on hardwood. If you will be working mainly with hardwood and processing a lot of timber it makes sense to look at something more appropriate to that workload unless you enjoy spending more calories than you need to.
On a final note, also keep in mind that many small hatchets are basically a splitting axe head which is far too heavy a head on far too short a handle. You can't carve well with one (if you have a mind to) and they become a chore pretty quickly unless you are splitting a lot of sawn logs for a woodburning stove, which is where they come into their own.
Look at your needs and gear up, or down, accordingly.
Once you have what you
need you can then take another look at what you
want, funds permitting.
I'll get my coat, again...