Borough: Swingers club is maybe not legal ** Coopersburg manager says members-only billing violates legislation. Looking to end Saturday night swingers parties at a borough strip club, Coopersburg officials employed a distinctly unsexy strategy. Club Kama Sutra held its very first $60-per-couple celebration at Silhouette Showbar, 111 E. Facility Ave., the other day along with planned another, titled „Back to School, “ for tonight. The borough stated the occasions violate borough law as the club had been transforming it self…