I will echo Fred's suggestion to use the Offset Path command for outline effects around letters.
That especially goes very strongly for anything having to do with
sign work.
Stroking paths and laying multiple copies of the same path on top of each other invites very disorganized and highly problematic work. Anybody that has ever sent customer supplied Illustrator or EPS artwork to a vinyl cutter without first inspecting the crud out of it knows what I'm talking about.
Sorry, but I have nothing but pure disdain for any artwork that cuts over the same area on vinyl 2 or 3 times or even more until it's cutting a hole clean through the vinyl and
paper or plastic carrier underneath it. And even if I know what the problem is, I don't feel like sitting there deleting multiple paths until there is only one left in that spot. Not everyone is going to know that they need to inspect AI and EPS artwork for such problems. I don't feel like doing all the "expand" work when the person who created the artwork should have taken care of that himself.
Anybody doing a "finalized" logo design should have an end result where all strokes have been expanded and any other live effects flattened. There should be absolutely NO duplicate paths laying over the top of each other. It should be clean and ready to sent to a vinyl cutter or CNC router.
I can see the point in leaving certain effects "live" when you're not finished tweaking it. When the tweaks are finished, a properly flattened version needs to be made. When it isn't I'm going to judge the work to be lazy and disorganized in quality. If I have to do extra work getting the art into form where it can be successfully cut or routed I am going to bill extra for the trouble.