i've never OW'ed or cloned, but even if i had, i would still recommend keeping seeds. that way you can always start new plants if the OWs don't grow back or are pest-ridden.
it also gives you the ability to grow again in future years, share them with friends, or put them on the seed train and take new ones in return.
if you are concerned with mixing up the seeds due to too many varieties, what i now do is:
choose the best/seediest peppers, halve them and put in the dehydrator with the seeds facing upwards so none fall out to the bottom as they dry. i also labeled each tray and recorded which peppers were in which positions ("tray 3, clockwise from label location") to reidentify when scooping the seeds out for storage. (try not to put two same-coloured next to each other, or use a sacrificial different-coloured pepper as a "divider" between them)
the bonus is you also get dried peppers to grind for powder.