That'll be fine if you don't want to use Verizon, however updates will still go through Verizon for the Turbo, since it is a Verizon exclusive device. Not saying that was necessarily your solution to faster updates, but that's how it will be.
The only way to faster updates is going to be using a Nexus or a cross carrier flagship like the Moto X. If they'd kept the Nexus 6 size similar to the Turbo or X, I would've gone that route, and I don't think I'm the only one who feels that way. Holding a 5.2" phone I knew I could deal with it, but when they start getting into the realm of Galaxy Note size and larger, then I have to bow out.
Something I also have been wondering lately, everyone is wondering what is the holdup off 5.1 on the Turbo. IIRC, Verizon was planning a Droid phablet for the first half of this year, essentially a Droid branded Nexus 6. Is Verizon holding up the update until that drops? They have been known to do that, to give the new device a chance to sell before pushing an update in the hopes of both giving the new device a chance to sell and possibly luring current customers to the new device. What do you think? Maybe that's the reason for both the holdup and for Verizon and Motorola staying quiet on the subject of the LP update for the Turbo.