2.5/3.0 - already have this combination. It was a 2.0 mile walk along gameland forest road to a steep descent into a stream bed. Nicely hidden ammo can. Return trip was going 3.3 mph until I saw a brown bear, thus finished the last mile and quarter at nearly 4.0 mph!
I believe I might be running out of combinations to find, thus might release this TB as soon as I can print out its tracking grid. It's been a fun companion.