I think it depends on the pattern and… other random things 
I’m pretty sure I saw / heard him do very clean string changes at speed on some licks. It may be that is was incredibly well done swiping, but I am not sure.
One example is the sequence of sweeps+string skips that he does somewhere in Intense Rock
Hard to say honestly but he does do it. possibly idiosyncratically.
His high degree of edge picking and neutral pick orientation can obscure the swipe especially if played away from natural harmonics particularly on plain strings. I also don’t think it’s an aggressive swipe either that you typically get with single escape, if anything it’s a skate over the string swipe, which is easy to achieve with a high degree of edge picking, and not trying to hit a lot of the string with the pick.