Thats exactly what I mean due to deobandi's having a 'strict' stance on certain issues and if one is also involved heavily with other groups,it could cause confusion. Mashallah that is great that your friend is enjoying the company of shaykh saleem. I think Imam Abdassamads stance on that is very pragmatic and practical. Sometimes, the outer aspects are given so much importance(to a new revert) that the inner aspects of faith,belief are put to the side and when the excitement dies down of being a revert, doubts start to appear as the foundation was weak. Also, if a person makes to many outer changes too quickly, he might find it hard to adapt amongst family and friends and thus more obstacles may come which could have been handled differently. See this is where people such as Imam Abdassammad could play a key role within other communities who do not have many reverts and thus may not know how to handle the situation.