TC artist page insists that Trey uses the G-force.

From the Stratovarius website forum:

"I used ENGL Powerball on the last Stratovarius gigs. I had a Mesa Rectifier, but that was/is broken. Effects:live I use TC Electronics G-Force, in studio whatever the song needs, usually some harmonizer for the rhytm guitars and the same plus some delay for the solos." -- Timo Tolkki

At 1:10 in this pre sound check video, one can see a clear shot of Jody Davis' rack, showing a G-Force, and a Marshall JMP preamp.

According to this page, this is one of the effects and other things he uses.

Andrew Groves features the TC Electronic G-Force Multi Effects Processor in his rig, as seen in his Instagram post, where he discusses updating his setup.

List of equipment on Coroner's official reunion website

Béla's rack holds one G-Force.

"Each side of the Twin-City goes into one of the Engl preamps, which have a TC Electronic G-Force and MXR M108 10-band EQ in the effects loop," states Premier Guitar.

"The Lexicon PCM70 has always sounded fantastic, but I also picked up one of the little MPX100s. I went into the shop, liked what I heard and thought I had to have one. And this thing, the TC Electronic G Force, is brilliant. It's a guitar effects unit — it doesn't have a great preamp or overdrive section, but I can use my Boogie V Twin pedals for that — but the effects are so good, it's probably the best unit I've got. You can even write your own scrolling advertising slogans across the display, though this one still has the message the shop programmed into it."

"This is the work in progress picture. I'll take a finished picture on my next gig. I have to use 2 effects processors, which I'm not too happy about. The G-Force is fantastic, but I couldn't get it to absolutely everything I needed. I'm still using the Digitech IPS-33B for the complex harmonies."

For guitarist, Nershi mainly uses a Collings I-35, a Santa Cruz D-Nershi Signature Model, a ’70s Martin D-28 ("FrankenMartin"), a 1955 Martin D-18, and a Ton Nershi T-Style Guitar. When it comes to amps, Nershi goes with his tried-and-true Fender formula involves a Blues Deluxe and a Blues DeVille. The handful of stomps that he relies on includes: Fulltone OCD, Fulltone Fat-Boost, Ernie Ball Volume Pedal, Boss TU-2 Chromatic Tuner, Fulltone Full-Drive 2, Pro Co RAT, Maxon Rotary Phaser, Dunlop Crybaby Wah, Line 6 Echo Park, TC Electronic G-Force. And for strings, picks, and accessories, he currently jams D'Addario EX115 (.010-.049), Rocktron MIDI Mate, Whirlwind Selector A/B, Sunrise acoustic pickup, K&K Pure Classic acoustic pickup, and Avalon U5.

In this photo taken in Mike's studio a TC Electronic G Force is seen on the left rack.