I feel that it would be impossible to maintain the same strong relationships, and understandably so the foundation for the friendship have changed tramatically. But if i need maintance work carried out i always use my witness friends and the conversations are pleasent and religion is avoided. ( i am not disfellowshipped but i wear a gold necklace with 3 crosses, which surprisongly hasnt botherd them. Wierd as an athiest it doesnt bother me wearing it either)
I should add that i wouldnt risk the above illustration with an elder.