Omost but not olso

Has anyone else heard the pronunciation of "almost" as "omost"? Is it a regional one, Lancashire, perhaps? One of the first people I noticed say it was Mark Lawrenson and I think the Irish international is from Preston, or somewhere near. I haven't noticed these speakers extend it to "also" but there are some funny pronunciations of "albeit" around. Don't worry obout that one: I think only footballers use it.