I'm looking at buying the S88 and the Fatar VFP3-15 is listed here as compatible:
List of Compatible Pedals with KOMPLETE KONTROL Keyboards – Native Instruments (native-instruments.com)
"Compatible" to me implies all three pedals are fully supported, and there's no asterisk or footnote to discourage that interpretation. But there's also no mention anywhere in the S88 Mk2 user manual about utilizing three pedals, and I can't find any references to it online, either. I've scoured user forums, Reddit, YouTube comments, etc.
Can anyone confirm? If not, I'll probably go with the Arturia Keylab 88 Mkii.