I have it. It's called the "Mach."
While no longer available on Sprint, it's on Boost Mobile, off-contract. Uses ICS 4.0.4, with a few more advanced specs than the Viper. 1.2 GHz, dual-core CPU, Adreno 225 GPU, 8 GB internal storage (5 GB user accessible---enough for plenty of the largest apps on the Play Store), 1 GB RAM, Gorilla Glass, better pixel density, NFC, Android Beam and some other upgrades, like Dolby Mobile on the stock music player. It can also accommodate a micro-SD card up to 32 GB and has a user-replaceable battery.
Both are easy to change out. The keyboard slides out smoothly and is well-laid-out. I only wish LG used the same layout as the "Enact," to allow typing closer to that on a desktop. nice to be able to view the whole screen when I type, like on a laptop, and not partially covered up.
Much better than the touchscreen for accuracy on long documents and checking your work. BTW, not all the office apps work well with the keyboard pulled out, especially caps, symbols and "fn"s. I found Kingsoft comes closest to satisfying this requirement. It's also free and has the equivalentscompatible with Word, Excel and Powerpoint for composing on-the-go.
My area is just getting 4G LTE, so the handset switches back-and-forth frequently, however, plenty fast on 3G. The camera and display resolution are what make this a mid-range device. Despite those limitations, it should be serviceable for both business and entertainment for a long time.