In Strunk and Whites The Elements of Style (Fourth Edition), an example on page 4 reads: Uncle Bert, being slightly deaf, moved forward. On page 29 it states that a subject should not be seperated from the principle verd, if the phrase or clause can be moved to the beginning. Shouldn't it be written: Being slightly deaf, Uncle Bert moved forward?
the example on pg 4 was used only to show how to use two commas to set off a phrase, so wouldn't do that if it was worded the second way... on pg 29, the advice is qualified by 'as a rule' which means there can be exceptions... and you'll see further qualifiers in the paragraph below the examples...
If the interruption between subject and its verb be short, and if it doesn't confuse the reader, then for the sake of style, in some case, it is prefered. -- Me
Also, keep in mind that Strunk & White is (generally speaking) a style guide, not an English grammar, so most of their rules are breakable, but still good general advice.