Lived in the UK nearly 60 years, JWs are the only door to door religious folk I’ve known. They are coordinated, so If you talk too much sense you won’t see them again. Probably had them knock under 10 times total at houses I’ve lived in. They are not ubiquitous or bothersome.

I use a case, one that also protects the face with high edges, also a screen protector, the hard perspex type. Well worth protecting your investment.