In reply to Onion magnet:
Yes, had it for a couple of years now, its jolly good. I'm literally just back from a two day bikepacking trip, a sort of loop from Chesterfield to Sheffield via Glossop: High Peak Trail - Pennine Bridleway - Trans-Pennine Trail.
https://instagram.com/p/5JmgB0rvKZ/ The frame bag was great, the fuel pod was great, the alpkit drybag strapped to my bars was great BUT I have just spent 65 quid on the Koala seat pack from them and am not impressed with that at all. I had unfortunately already had to return it to Alpkit when it first arrived as they had sewn on two different halves of supposedly one buckle, so that it wouldn't stay done up. Annoying, but no biggy and Alpkit were great at swapping it for me very quickly, but on this ride I noticed yesterday that after just 50 kms the stiffner sheet they have in the Koala packs had at a corner rubbed a hole through the fabric. It's not big but I can see more wear points now that also look like the fabric will break. Really disappointing to happen on the first use!
But, to your original question, the framebags are great. You will have to move your bottle cages to your forks which requires some jiggery-pokery but its not a big problem.