In reply to Bloodfire:
I've been looking at the DMM Raptor for use similar to what you describe. It has an adze and hammer version (def go for adze for the first one) and I believe you can use the Fly picks with them.
Don't stick with just tech axes for everything unless you're on a very tight budget. Older style axes would have worked but the new ones just don't have enough of a spike. A Quark with the pommel rest removed will not stab through neve (I tried so you don't have to!)
Walking axes are usually fairly easy to sell on second hand so If you find yourself not using it in the future you can sell it off again.
If you are very keen to move on to winter climbing rather than walking skip the Grivel Munro and get something with a bit of a curve and maybe the potential for a more aggressive pick for easier ice climbs, but make sure for now that it does have a proper spike. (Air Tech, Raptor)
Alternatively if you expect to end up doing ski touring, long easy alpine snow routes, or lots of walking in future investing in a lightweight walking axe may be worthwhile, but tricky to know what you want without trying out a few in various conditions. (BD Raven/Ultra, Camp silly lightweight paper mache jobbies)
I got a 70cm walking axe for my first axe. It was good at first but as I got more adept with crampons it became mostly unnecessary on flat ground and annoying on steeper stuff. Moved on to an old Fly (50cm) for walking since I had it and wasn't using it for climbing anymore. Sometimes a bit short and ended up leaning over a lot while walking. I'll probably aim for 55-60cm for my lightweight axe for ski touring.
Remember that you don't need matching axes to climb. My friend routinely climbs grade III with a Cirque adze and a Quark hammer. Other people prefer a straighter hammer because they are easier to hammer with, and get a more aggressive adze tool.