I won't tell you it is "safe" and I won't tell you that you should ride to either dealership, but....
I wouldn't hesitate to ride to the shop that is 28 miles away, even if it was 100% straight superslab.
![](http://i32.photobucket.com/albums/d32/Kramer_Krazy/vicki_tire-1.jpg)
I currently have tires that are worse than yours on my ST2 and the GSXR-1100. I currently use both mainly for commuting, and I wouldn't have any issues riding either of them the 50+ miles round-trip; and probably will a few more times before changing them out.
Consider yourself lucky my friend
![Smiley](http://ducatimonsterforum.org/Smileys/classic/smiley.gif)
At that level of wear, a tiny stone in the wrong direction can pierce a hole into that in no time.. I've had crazy incidents with 4 wheels, and want nothing even close to that when on 2..
Personally, I'd rather spend 200 bucks a replace a tire than spend thousands replacing body parts (which are not always available in stock)..