Well I have a pair of Keen snowboots I love. I am usually an 8 or 8.5 and I sized up to a 9. I ordered a 9 in these too. Well I put the right boot on...no struggle at all. The left  took 5 minutes of pure fighting. At one point I seriously checked to make sure I had the right boots on the right feet...or that I wasn't given two right shoes. I have them on now and seriously hope I can get them off later. At the least...Keen should have added a loop to help pull them on. I am going to keep these for a week or two to see if it improves. So bizzare that one boot was effortless to put on and the other isnt.
UPDATE: Well, had them on all day and back on today. The left boot is not as much of a struggle. Biggest issue I think is the fact that you have patchworked leather on a inflexible sole with no loop to help pull it on and off. If you order a half size up from your normal size, wear thin socks, and keep working with them...they will work. I have had them off and on today and it hasn't been too much of a struggle. I can already feel a difference.