I’m also interested.
Space is tight in my store so bikes need to be vertical quite close to each other with bars loosened and rotated at 90deg.
I use these Mottez hooks for all other bikes and they work well (should fit 3inch) but probably not as stylish as you want.
http://www.halfords.com/cycling/bike-maintenance/bike-storage-solutions/mottez-bike-storage-wheel-hook
Fat bike wheels don’t fit in though so it has to take the weight of the bike using the point of the hook in the middle of the rim. This worked ok until I went tubeless but now the point pushes the rim strip in to the wheel causing the seal to break and the tyre to deflate.
I have beeen looking for a bigger version for about a year now.
Have found plenty of large hooks but as I need to mount in to a wooden post no deeper than 50mm it is difficult to get something pointing the right way so that the wheel sits vertically against the wall whilst also allowing the fixing points to be arranged verticaly instead of horizontally.
If anybody knows where I could get a larger version of the thing at the link, or can knock one up then let me know.