Lot of the NCRS guys do use a rubber ink stamp to put the ID on hoses, weatherstrip, etc. How well it does in Judging depends on how much it looks like OE, and how knowledgeable/cranky the Judges are that particular day. I've had items that passed Judging at the National level fail miserably at a Chapter meet....in some cases by the SAME Judge(s).....
That being said, get the hose that most closely resembles "factory" installed, and let it ride. A minor deduct for not having the ink stamp won't really effect the overall score. Eventually, you will find that elusive hose....
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Joel Adams
C3VR Lifetime Member #56
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"