Just a few questions regarding VOR voice characteristics.

I have read in several sources that VORs may have an accompanying voice identification in addition to the Morse code identification. Flying around I have never heard this. I was wondering if anyone here has, and if possible, could list some VORs that currently have this.

I've also read that VORs may transmit "test" (or "TST") in Morse code in lieu of their 3-letter identification during maintenance. Again, I've never heard this. Typically whenever a VOR has been NOTAM'ed temporarily out of service I've just seen no signal on the air and didn't hear anything.

Lastly, whenever there is an AWOS or ASOS broadcast over a VOR, is it simply overlaid on top of the identification like HIWAS, or is it timed, i.e. the identification only takes place between transmissions?

Thanks