I see a lot of reference to twisties and cures.... LMAO... that is what my Buell 1125R is for. In MY case I'm not trying to do everything with one bike. Stock baggers IMO suck in the corners, not nearly enough lean angle. Sure building these bikes with big wheels and stretched bags will limit some of their abilities I would never deny that. Although there is no reason they can't be ridden through the corners or for several hundred miles a day albeit not in the same manner as a stock bike. All this can be said for dumping wheel barrel loads of money into building a bagger motor another LMAO situation. The vast majority of 600CC bikes with a competent rider will walk a big old bagger with triple the CC's and weight. I do understand not everything is for everyone and I'm ok with that. Knocking another persons choice is a little off IMO.
The picture is for reference,
since I'm the same rider... I'm unable to get my STOCK Bagger out to the edge of the tire like I can on my 1125R. So I say Baggers can't keep up with me in the twisties....
Might as well load them up, chop them up and use them for touring bikes.... oh wait that is what they are intended for... touring not carving corners... My bad... 
Good post, but taking the functionality out of a motorycle makes it a showpiece... now if you commute down the freeway and through very mild turns it may be fine... but watch that video where the guy flips that tricked out Street Glide because he was simply dragging parts all over the road to the point the tires lose traction with the ground.
A "competent" rider on a 600... I dont know about where you live, but here the streetbike/sportbike crowd has far more posers than "competent" riders. Any douchebag can ride a motorcycle in a straight line... the turn (or series of turns) is what separates the men from the boys.
I roadraced bikes here in the late 80's-early-90's, and all my friends at the time thought I was nuts as my Daily Rider was a 79 Shovel. We even played with it on a track day just for kicks. A big parting from the GSXR750 I was riding as a track/street bike, but fun just the same.
While the rear tire on my FLTRXSE isnt scrubbed all the way yo the edge of the tire, its pretty close as its between the B&S and the edge... makes for a fun ride behind some young'in on a 600/750/1000 in a long sweeper.