Did you know fantastic help is an anagram of Planet Catfish? This forum is for those of you with pictures of your catfish who are looking for help identifying them. There are many here to help and a firm ID is the first step towards keeping your catfish in the best conditions.
Yes L98 seems to be a variation of normal Hypancistrus zebra and should be considered to be as one.
As far as I know very little has ever been exported so pretty unlikely you will ever find them in shop and if you do you will probably pay a very highed priced for an Hypancistrus zebra that just has a strange coloration, in case of offspring it is pretty sure that the young will show common Hypancistrus zebra coloration..
Cheers
Yann