I think u can do it with haussler, but not in 2008. On my game in 2011 he has 73 on mountain. But I have only trained him on sprint and cobble. I guess if you train him on mountain and send him to camp, you could make him a good climber too.
i won a mountain stage in the giro with Bennati, but that was because i sent him in a breakaway to grab points in an intermediate sprint. that stage i also got second, with cunego, 40 seconds back or something.