Having just read 'I'm With Stupid's post concerning safety on his Asian tour I wondered how many of us use a mirror when touring.
For safety reasons and peace of mind I've always rode with one.
Initially I had used the Blackburn bar end type, but when cruising along out of town I found it hindered my comfort as was just slightly in the place where my palm rests, on the top corner of my bars. One advantage of this mirror being it can be mounted either side. (It's shown mounted on the R.H side just for the purpose of this forum post photo)
Wanting to remove this comfort annoyance on this years tour I bought an old school (almost moped?) style mirror. Initially a reluctant change as the mirror has a slightly different concave surface so the reflection was slightly different, but have since come to prefer it now it's mounted out the way from my hands. I fitted two additional washers on the top-nut so it wouldn't chew up the plastic bar-clamp, and enables it to be turned inward slightly if required (when going through occasional doors) or even reducing chances of damage if it gets knocked.
I know many prefer riding with a helmet and - although maybe not true in all circumstances - I feel prevention is better than cure. So who else uses a mirror?
I've tried many different mirrors. STRONGLY believe in them but most are worthless. BEST mirror ever is the Mirrycle!