Having an iWatch can be a very valuable thing for any person. Technology on the wrist is going to be used on a daily basis, and multiple times a day at that. In order to get the most out of something like this, accessories can really make or break a look.
Some people are going to look at iWatch accessories as valuable things to add to the entire experience. Others are going to look at it as a way to really individualize what a watch looks like. There is really no reason to not look at accessories, because it can be a very fun and enjoyable shopping experience.
Shopping online is probably the best way to go for accessories, because the best options will be found. Stores might carry a few different things, but usually not enough to satisfy the masses.