The second article is from 1998, and it doesn't sound like the doctor actually has a clue, from this part of the article:
QuoteThe penis transplant operations could take place by twinning sex change patients--a man who wanted to become a woman could donate his penis to a woman wanting to become a man.
Because MtF's need their parts for the SRS surgery. It's not just cut off.
The first one, the guy only had the penis for 14 days which doesn't give much of an idea about the long term issue of immuno-suppressant drugs. Although at least it is a 2006 article, so there could be followup from that surgery.
I'm pretty sure I wouldn't risk a lifetime of immuno-suppressant drugs just for a penis. Although some may make that choice. The risk for me of drastically shortening my life would be way too high. There also wasn't a whole lot of information about function. If it's just cosmetic, might as well have a slab of your own flesh sewn to you. At least you're not risking your life to the same extent.
Stem cells look the most promising, but we seem to be a fairly low priority for research.
Dennis