They do make those "reef safe" meds look very tempting. If anyone ever succeeds in making one that actually works they'll probably make a killing on it. I know I'd pay a high price for it.
The problem is how do you effectively kill one tiny bad invert, ICH, while not killing the other good - your biofilter, liverock, corals???
Today if I didn't know to look for them I probably wouldn't even realize he has ich - only a few spots.
Thats a good sign, he should be fine till you get back and treat. Yes, I would start the QT
as I said, it will only make it easier for you when you return. Plus if you order (or borrow) a refractometer, it should be there when you return. You will be ready to go. Put several hunks of extra liverock in if you can, that will eliminate a big cycle and you probably won't be able to measure ammonia with fish in there. Worked great for me. The only time liverock has to come out is when using meds, it will absorb meds which is not good. You can also use a power filter or skimmer, does not affect hypo at all.
PS - don't dip him, with few spots it's not warranted, he will be fine for 10 days, keep the water quality high (a few water changes would be a good idea as it would both reduce the parasites in the water and improve the water quality), keep the temp med to low (~70's), and feed vitamins & garlic - this combined will give the fish an edge so you can vacation worry-free.