Dual rating GIV and Dash 8/Jetstream

[CONVAIR]

Hi,
Does anyone have any experience/horror stories/procedures/limits on pilots being rated and current on Gulfstream IV and Dash 8/Jetstream/similar turboprops. I have been current on CV580 and Metro at the same time, but wonder if there are any other fish hooks for a concurrent jet/turboprop operator.

[411A]

Did have one guy some years ago who was rated/flew G2 and FH227 at the same time, no problems noted that I recall.

In addition, knew only one fellow who was triple line qualified on 747/L1011/767....and he mentioned that he spent most of the time in the sim.

Glutton for punishment.

[Crossunder]

Heard that Olympic of Greece will have people flying both DHC8 and ATR... Do we smell confusion?