Just got my Otis. Have about 70miles on it now. d2create called it right on the tire upgrade. I just put Schwalbe Marathons 26x1.50 (100psi) on it and I like them a lot. Still trying to get the gear shift cable adjusted right, probably screwed it up myself when I first put it together. It works ok but just not right yet. Nice bike, gives a little more options than my Langster. Not as fast as a road bike but no need to be in a big hurry to get to work anyhow.
As far as Swobo, Great company, they have been very eager to resolve any problems. I needed a longer seat stem and they are sending it out free of charge. There was a mix up with the shipping house so I had to call the main office and the lady that answered knew all about the stem just from me telling her my name. Don't see that much anymore. I will try to post a couple of pics.