If you are the homebrew hacker type with an unlocked device (be it developer or chevron unlocked) you can now install a XAP that will give you access to the application stores from other OEMS e.g. the HTC store on a LG device.
The hack is by GoodDayToDie and can be found on XDA-Developers.
He notes a restore point is advised, but that the store will revert to your native OEM one automatically in a few days in any case.
Read more about the hack and find the relevant XAP on XDA-Developers.