I appreciate everyone's thoughts - thanks guys.
I agree with those who says the integrity of the tire isn't compromised - that's just too small of an object to harm it in any significant way. If it was the typical screw or nail, I wouldn't even have asked the question - I would've just replaced the tire but that's not the case here.
I'm still debating about which route to take but I'm actually leaning towards 2010 FLTRX's suggestion and using Ride-On. My reasoning is that if I take the time and trouble (i.e., labor - mine or pay a shop), to pull the wheel, break it down and patch or tube it, I might as well just replace the tire. Not sure how many miles are left on that Metzler but I doubt there's much more than 5k, if that (more on this below).
I initially dismissed the thought of using a sealer with my custom RC wheel but from what I've read, Ride-On won't harm it … and it's not the same messy goo like other products. In fact, I really couldn't find anything bad about it in my brief research - some guys actually use it with new tires for puncture protection and dynamic balance. Worse case if it doesn't work is that I'm out about $30 and a few minutes of time. At that point I'll just replace the tire. If anyone has had a negative experience with Ride-On please share it.
On a side note, what kind of mileage are you guys getting with Metzler ME880s? (It's a 200/55R/17) Is the wear shown in the pic typical for this tire with 5,000 miles? I know rears wear more than fronts at roughly a 2:1 ratio but my front Metz looks practically brand new. I check pressure constantly and always keep it at the stated max 42 PSI as shown on the sidewall. I may have to switch brands if this is what I can expect.
You have some good points about the labor/cost to tube that wheel. I can see why at that point you would just replace.
Re: Metzler ME880 mileage...I run them as we'll on my Heritage Springer, and I am impressed with their grippiness...but that is because the rubber is a bit softer, and wears out faster. I went with the Metz's on that bike only because I had a custom white wall made for the front, and it was either Metz or Avon.
From what I have read, with the Turing bikes, it seems the average is about 8-10k, obviously depending too on riding style.
For your bike year, I know there aren't many options as I have had that problem too with my Street Glide. I see you bumped up to the 200 series too.
I am actually happy with the stock Dunlop tires. On my second rear, and easily had more miles left on the old one, but was approaching a long trip. Had over 11k, with the 110" motor as well. Probably could have gotten another 1000-1500 out of the back tire. Plus, they actually seem nice and grippy on the sides, and a little harder in the middle for those long cruising days...