This is true I interviewed with WC and turned down the offer because I was interviewing for a few other big pharma companies. Every DM asked me if I was interviewing for other companies and when I said WC it was looked at very unfavorable. One of the DMs bluntly told me not to get involved with WC because "they are unethical and don't follow pharma code." He then said many hiring managers are skeptical of WC reps.
One of my friends also interviewed with WC for the same DM (MR.) The DM was completely rude and disrespectful to her basically ripping apart her resume and claiming she was unqualified. The irony was that at the end of the interview the DM basically admits that my friend was more qualified than her when she started in pharma. Her Linkedin page says it all only job ever was WC.