WOW, that stuff aint cheap. $28.00 for 3oz? I don't think 3oz is going to get you very far.
We recently put some bamboo down at the house and was sold something called Bostik Best. It's SUPER thick and sticky and when it cures, it really holds. And it's about $6.00 for a standard calk tube size. I was thinking that might be a good alternative. I'll have to pick more up and do a test.
You have to keep in mind the application differences though While it might work the caulk might not like the temperature changes outside compared to the fairly static inside environment.