[Royal]

Given the fact that it is the only device I now use, Yes.

The only thing to be careful with while using an 801 on the prodigy is not to overtighten. Unless there has been an improvement in the design since I bought mine. (I was one of the first to have one.)
If you are not careful you can overtighten it and damage the atty. Just run it down until it makes contact, then give it no more than a quarter turn to snug it. It may seem loose like this, but it is fine as it will not snug tight like on a factory battery.
With the 901 and 510 adaptors I have found that this is not a problem. IMO the 510 gives the best fit.
I am vaping on the Prodigy with an 801 atty while I type this.
The other draw back is the tactile switch. I have gone through two of them, and am now back on my modified switch, one that I replaced with a heavy duty 2 amp radio shack SPSP momentary. For only a couple of dollars I made my switch to last, though it is not as aesthetically pleasing to the eyes, it works every time. I am currently using the resistor to reduce the voltage to 5 volts, but am seriously considering removing it for full 6 volt operation. I love the way the 801 hits on 6 volts, but I have not yet tried the 510 this way. I am also trying to figure out how to put in an on off switch to bypass the inline resistor so I can switch back and forth from 5 to 6 volts easily. The only problem is finding the room for the additional switch.