I would be shocked if there were no ulcerative cystitis caused by PCP and PCP analogues; I think it is likely that all arylcyclohexylamines carry this unfortunate property. However a quick scan of the literature showed that there have been essentially no studies done exploring PCP and PCP analogues and potential bladder/urinary toxicity. This is almost certainly a fact that virtually no one uses PCP or PCP analogues at sufficient doses to make cystitis a practical risk (not only increased potency, but far less redosing in general) Would be cool to get a definitive answer, but I would imagine that you're exactly right.