Can we use more than the mogul Radio...

[dew.man]

The Vogue is the same among the carriers - only the software is different. Therefore, it should be safe to flash the Alltel radio to the Sprint device.

The Titan, however, shares only the Qualcom chipset, and is a different monster alltogether. It has built-in WiFi, as well as a keyboard, and different memory allocations. It is therefore risky to flash the Titan radio to the Vogue.

But don't take my word for it - take a look at CokeMan (the creator of the current unlocker) who's own Vogue is still a brick due to pulling code from the Titan...