We also do single-engine taxiing on the Fokker 70, both after landing (1 min cool-down req.) and before take-off (if expecting delays). As the F.70 has one pump for each hyd system on each engine hyd press is not a concern. You just have to avoid using several hyd powered systems simultaneously because hydraulic flow is lower. With the nice flight warning system on the Fokker there even isn't a single warning or chime when you cut the engine during taxying.
We used to do it on the Dash 8 until it was found that the stand-by hyd pump used to power the left system wouldn't keep up enough flow to keep the brakes powered under all circumstances. Now we only feather the left prop to avoid idle thrust and noise.