Brent,
See that would be great(speaking of the fit-up for the erector), "IF" this was a field welded moment, but this is all done in the shop and in my opinion it wastes alot of time.
There is alot of time invested preparing the ourigger and shear tabs (sometimes double angle knife connx) and providing slots/torquing bolts and all that jazz. I can't see how it adds any value to the structure when all this is done inside our shop and I'm keeping an eye on the fitup for the moment welds and all of that. All it does is eat up man hours and waste plate material/bolts.
If we leave the web of the O/R long and run it into the web of the main member, fillet weld the web on both sides, the piece is locked into position, the fit up for the full pen is verified and the moment welds are placed. I come along and UT those flanges and make sure all is well, it gets cleaned up and off to paint it goes and then loaded.
ie. clean up = cutting off the run-off tabs, grinding up the ends to providing the proper contour, etc.