I did that and, similar to dgk02, arrived to find no bike rack one day. Fortunately, they had just moved it around the corner, and there was my trusty lock.

The biggest risk I see is that you wind up wanting to stop somewhere else and now you don't have your lock with you.

I guess you can come up with conspiracy theory stuff about rigged locks or some worret stuff about rust and elements, but as long as you and maintenance guy are OK then it sound like all is OK.