I would be interested in an answer here as well. We are a company based out of Canada and as such have resources allocated by ARIN. We have a number of customers who are not within the ARIN region that we would like to be able to SWIP IP space to. I would much rather do a re-allocation and have our customer maintain their own contact records rather then needing to do a simple re-assignment and having to get them to ticket us if email addresses or phone numbers change.
Chris