Went with SS, but since this was a bit of a controversial one I thought I'd respond with some thoughts. As I say for me the MA 10 Sprint is as much about the threat as anything else, and having a back up plan. This was demonstrated in the last game when it forced Cram to set up with a line at the back and three on the LOS. I put mr Juan on the line initially but plan A was always to try to get Shoofly the pushes he needed as his two heads made the dodges much easier. Had I failed to get pushes I could have still tried with Juan but as it was I needed him to fill in a gap and Shoofly scored. Later in the game when I was down to 6 or 7 players with 4 turns to score having the one turn option was also invaluable (though in hindsight I should have stalled for one turn because Cram scored in 3 pretty easily and he could only have been hit by an unskilled hobo).
Still I think this example illustrates why I like to have the sprint and I think its easily worth 20k. BUT and its a big BUT, I don't want to use him as a specialized one turner, because one turning only comes up like 1/3 games (off the top of my head estimate) and even with a sure feet MA 10 the odds of succeeding are not that great (add two heads and it becomes a bit of a different story). So you'll score a one turner every 5 or 6 games or so unless you're specifically looking for one and for me that's a poor return on investment. But MA 10 is great in general and with blodgestep he becomes and awesome nuisance and offensive threat.
As for leap, I feel like Skaven have to have the threat. I've done without a leaper for a long time now but my win rate has not been all that great. Having the clawpomb does give you some kind of a threat to the slow cage grind, but it only works occassionally. 3+ leaps aren't that bad, Wardancers and Slann do them all the time and its great to have the option for when other things aren't working, I really think Skaven needs that. But this wasn't the player to take it on, I really need my dauntless wripballer to have it so that's what I'll do, once I've broken the BC scoring record with Laxepudding of course
. If a gutter dies I'm building wrestle, dauntless, leap as my next one to get the threat going a bit faster, tackle and stripbal are luxury skills for this player.
Anyway thanks for all the input.