Using APEC Business Travel Card (ABTC) in Russia for leisure travel?

Holders of ABTC cleared for Russia can travel around Russia visa-free for 90 days. The ABTC is officially meant for business travellers. Has anyone has travelled around Russia as a leisure traveller using the ABTC? Would one be asked to show proof of business dealings or contacts when one enters Russia without a visa but possessing a ABTC cleared for Russia?

I was checking he forum specifically for this as I am planning to do the same. The rules stipulate that ABTC is only for business travel. In most economies that I have entered, they have asked some cursory questions at immigration as who I plan to meet or what I do..... I have never had to produce any documentary evidence since my story always made sense. But if it did not, I am sure there may be further digging.