...weljo has a pretty clear indication on how the H/B's handle. Does anyone else have any "specific" info vs guessing?...
Yes - ME. I low-sided going up 366 up Mt. Graham (just west of Safford) a year ago at about 15 to 20 mph in a left-switchback. My '08 has H-B crash bars and Zeta handguards, and the crash scratched both, bent my shifter (bent back, later again with heat) and added some "wear marks"
to the mesh gear I was wearing (also broke one of my ribs...). Repaired the marks on the H-Bs with electricians tape, and the Zetas with a file and some reflecting tape. The rib? THAT took a few weeks! (Pictures of the repaired parts are below, sorry I did NOT take pics before fixed.)
I have S-Ws on my '09, so here are my observations:
H-Bs - when installing them, the nuts that are 'captured' in the front of the crankcase 'turned'. They are reasonably tight, but this wasn't good.
S-Ws - when installing them I had some of the issues with the U-bolts as others recount, and, once installed they make it VERY hard to access the lower bolt on the countershaft-sprocket-cover. There seems to have been an issue with one of the plastic side panels down low, but the '09s about 1700 miles north of me right now, and the '09 has MUCH MORE mirror vibes than does the '08. Is that the S-Ws fault...?