I have an old ART SGX2000 Express in my 11r loop but just using it now for a clean preset, by turning off the 11r fx and amps and cabs just using the fx loop work it. it has dual (right and left) stereo pitch sifters and a ton of other fx, a 12ax7 tube that has 2 of them in one package and a room simulator, hope fully one day I will get some time to work the fx the 11r don't have and set it up with the midi to change it simultaneously.
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"May you be Blessed and our Lord Jesus keep you"