TMW,
I'm not anticipating a sudden improvement by any horse as a result of adding a nasal strip. Assuming a horse will improve with the strip is a total guess.
I wouldn't think after the fact the trainers or fans can no longer use Chrome's use of shoes or strip as a advantage to his winning. The shoes and strip are available to every single horse in the race. Those changes have worked for him, they're legal, so we try to beat him knowing that.
If SI adds a strip and it assists his breathing, not that big of a deal. If a horse like Wicked Strong added a strip and it assists his breathing, whole different ballgame. Until they show improvement, I'll handicap these horses "as is."