Now that we've gotten completely far afield with this topic...
Verizon and AT&T take one approach to mobile data. Sprint and T-Mobile take another (well, T-Mo's is a hybrid, but bear with me). VZW and AT&T give you a bucket of rather expensive data that you can use for whatever you want, but that data isn't unlimited. Sprint gives you unlimited data for a specific purpose (use on smartphones) and if you want a data bucket for a different purpose (non-smartphone use) you pay for it. Ting, which runs on Sprint, falls into the same category as VZW and AT&T on this one: expensive, limited data that you can use however you see fit. Sprint has run the numbers and concluded that, for a legitimate mobile user (consuming data on their 3-5" screen mobile phone), they can sell "unlimited" data and get away with it, because people will use their home connections to torrent and stream movies.
As far as VoIP goes, maybe we should split off the SPC2 discussion into a different thread. That's an interesting device, for sure. Hopefully it has 1x voice fallback, since it's a lot easier to get a solid 1x voice signal than a solid, VoIP-capable EvDO signal (though the latter isn't particularly hard), particularly if the 1x signal is running on SMR and the EvDO signal is running on PCS.
As far as gaming goes, LTE's latency, when the network isn't configured weirdly (as Verizon's used to be in Denver...but they fixed it), is comparable to DSL (well, interleaved DSL rather than FastPath but you get my drift). 30-50 milliseconds for the first hop with a reasonable amount of jitter, then whatever network backbone the service is traversing (Sprint has a good network backbone).With a reasonable signal, gaming and VoIP will work perfectly over LTE, though you'll want to download patches over a connection with a higher cap.
As for BitTorrent, legal or not, do it on a wireline connection if you can. Not that it can't be done over LTE, but you're more or less running a server when you're doing that, and you want a reasonable amount of capacity between your server and the Internet. An LTE sector, with 35 Mbps of download capacity and 13 Mbps of upload capacity (real-world numbers, assuming everyone has reasonable signal levels) shared between everyone on the sector, is not how I define "reasonable". Then again, I can max out my home cable connection and be using less than one-third of the available bandwidth on my cable node.
That said, BitTorrent doesn't really need a fast, reliable or low-latency connection anyway. It just needs a "clean" connection, where ports aren't randomly blocked and packets aren't forged...ahem, Sandvine. You could run the darned thing over dialup and it would still work. I don't think I've ever done that, but I might have.