It was because the original films were so poor that Brian retranscribed all his original transcripts of the IoM censuses.
There is a very good reason for expanding abbreviated first names when creating an index - which is obvious. It is also repeatedly written by indexers that an index is only a guide, and that the original record should always be viewed.

The problem with Ancestry is that unless you know the Piece & Folio etc., the access to the scan is via their index which is as often misspelt as it is correct.
- So Brian has supplied the Surname Forename Age Parish Piece Folio Page.
www.iomfhs.im/lawsons/census/census_index.html

Sue