Yeah - I haven't actually locked it up anywhere yet so haven't tried the U lock yet, but am familiar with Shelton Brown's method.
I was thinking of getting the Abus CITYCHAIN™ 1010/110cm instead of the folding lock to use in addition to the U. It's only a 12 on Abus's security scale vs the folding lock's 15, but I think that is fine when combined with the U Lock that is a 15. It is cheaper than both the 85 and 110cm folding locks and it is lighter than the 110cm folding. It's also more flexible for getting around things.
Those abus citychains are garbage, espescially the 1010 model.
Go to westechrigging.com and order a pewag security chain. 5 foot will let you tie it to anything you may find. 10mm minimum size.