In reply to Simon Overton:
I've got an XPD and admit the axe holders are a bit crap.
Make sure you get it fitted properly - can be a bit tall with the back stakes in it which makes it difficult to look up when climbing with it fully loaded )take the lid off).
Got its good points though. Well stable and comfy, can be stripped down to the bare sack and virually bombproof. Try to get a second hand one and cut the axe tubes off.
If thats no good, I've got an Alpinist 60+15 for sale!!