According to an EHX article about Frusciante, he uses the Pog live and in the studio.

At 4:05 in the video, the camera points towards the floor, revealing John's pedalboard, including the EHX POG. He also mentions that he used the POG to get the organ sound in "In Repair".

Visible in this ca. 2005 photo of White’s pedalboard featured on Kit Rae’s Big Muff Pi page. It was first used on “Blue Orchid”, as specified in this September 9, 2010 Guitar Player interview.

Kit Rae’s Big Muff Pi Page - Big Muff Users and Their Pedal Boards

Shown above, left to right: Jack White's large pedal boards, circa 2005, with a red Big Muff (rehoused by Analog Man).

Guitar Player

Sometimes, I use a POG pedal. I think I was the first person to record with one on the White Stripes song “Blue Orchid.” Electro-Harmonix sent me one as a present when we were recording Get Behind Me Satan. “Blue Orchid” came out two weeks after the session, so it had to be the first song to feature the POG. I use it to add the first and second octaves below, and one octave above the root note. It’s four of the same note simultaneously. It’s just so heavy. The riff is actually pretty simple, but it’s all about the one. It’s a funk-based idea.

The original POG can be seen on Josh's board for QotSA in this picture.

The Electro-Harmonix POG can be seen in this photos of Alex Turner's pedalboard. In this particular photo, here are the settings on his POG:

• DRY OUTPUT is nearly all the way up
• SUB OCTAVE is about 20% up
• +1 OCTAVE is about 30% up
• +1 OCTAVE DETUNED, +2 OCTAVE, and +2 OCTAVE DETUNED are all the way down
• LOW PASS FILTER is nearly all the way up

In this image we can see Flea with a POG Polyphonic Octave Generator.

In this interview with MusicRadar, The Edge's tech, Dallas Schoo, details The Edge's setup during the 360 tour. The POG is one of his "outboard effects.

In this Guitar Player excerpt, Satriani explained how he used the Electro Harmonix POG pedal for the intro for "Lighten Up".

We can see the first EHX POG in this picture

At 2:05 in this interview with Synyster Gates' guitar tech, Za, he talks about his use of the POG.

"In his rack here, we have a nice POG, and it's rad."

"This POG has been hot rodded to a pedal to create a low pass and you're able to roll it in. So when he hits it it's almost like a volume pedal but it acts also like a filter. So it's very textured and he's able to do a lot of cool things with that. It's used in everything and anything. Sometimes on 'Livin' On The Edge' he'll use it. He also uses it for 'Legendary Child', the new single that they're playing. He'll use it in places he's never used it before all the time. That's what he does. He likes to have fun, which I like too," says Joe Perry's guitar tech.

"...and Electro-Harmonix POG Polyphonic Octave Generator, which you can set up to play one octave below, an octave above, or two octaves above." - Ray Toro