So, to put my mind at ease, I personally would get another block, but hey, it's just what I'd do. Each to their own. No amount of facts, articles, success stories, or anything else would change my mind.
Well you should not post to these questions then. Why...?? because your giving an opinion based on your "feelings and emotions" rather than based on sound mechanical principals and logical thinking.
Fact is that as long as the bearing covers the hole once the metal is removed, then there won't be a leak. those bearing shells are clamped in nice and tight , their force is exerted against the crank bores and will act as a blank off plate , so will the parting line of the bearing and the main cap. Yellow Rose is spot on.