It's a good question and sorry for the delay on answering this one guys. I needed to discuss with the dev team to get a clear and definitive answer:

Ok, so as you expect when purchasing tokens you would have to own/buy ETH as part of the token sales. However, inside our own actual applications we will have a dedicated service that will mean users will not have to own any ETH inside the application to conduct trades/transfer of our tokens. This service will take care of the ETH transaction fees on behalf of the users, with a transaction fee in FORCE tokens.

Btw we are going with a new currency ticker symbol (FORCE) instead of TFT - because we discovered some really old redundant coin was using this symbol on EtherDelta. We could have continued to use it however we made the decision to avoid any conflict down the road, plus our new symbol is much more fitting to our project.

~ Pete Mardell, CEO TriForce Tokens