Foggy, if I were standing west of the divide and the wind blows in from the east and across from the divide, I'm experiencing downsloping winds.
Upslope means exactly that. A storm such as this one is considered an upslope event for the front range and denver but should the east winds result in warmer temperatures and dry conditions in the west, such would be considered a downslope.
Not that it makes a damn bit of difference, mr_gyptian is right-- the only thing that matters is that we've been getting skunked and it'd be nice for Ullr to make it all up to us!