I used Orange sealant with very good results .... 3 punctures that I know of, and all 3 sealed. Then I rode over a broken bottle and got a long slash in my tire. It sealed at low pressure but I used a tyre worm which sorted it. Once home,I removed the tyre worm and used an old fashioned patch with the old vulcanised glue on the inside of the tyre. (With IRC tyres, this can be done)
Over the patch, I used a Park Tool tyre boot. It's worked, and the tyre keeps pressure and has held up well. When I refitted the tyre, I tried the new Slime STR Premium sealant. I read good reviews, but the 60ml that I added did not seal the sides of the tyres and I then added some Orange sealant, and it sealed and mounted properly with a track pump
so, I'm not sure if the Slime is better than the orange sealant, as I have not had another puncture yet, but it did not seal the tyre when I re-mounted it
I have a new commuter bike/training bike that I will use with tubeless (I will try Hutchinson Sector 28's first, trhen some Compass tyres), but on my fast bike, I will be going back to Specialized Turbo Cotton clinchers
Keep us updated on the Finish Line Sealant