Hello Jim,
I wouldn't say its more cumbersome because you don't have to go the extra steps to create the plane.
In the pic I posted all I did was created a sketch with one line exited and used that line to cut the part. Honestly it was like 4 clicks and a couple of seconds to perform the cut and I basically did what you described your work flow would be in AutoCad.
Sometimes the simpler method works best, the software assumes you want to make a plane from your line in the sketch and does that step for you so there is no real need to create a plane unless it needs to be a weird angle. If the cut goes straight through the part just create a line at the angle you want and do the slicing.
I hope this makes sense.
Phil Procario Jr.
Owner, Laser & CNC Creations
