picked up a set of asano nagura (botan, tenjyou, mejiro) to experiment with and am wondering if a zulu grey can be used as the base stone. would it be considered a 'high' enough level stone in JNAT terms for the job? thinking i can try using the nagura progression after i set the bevel on synthetic and then just finish with the zulu grey with water only. kill two birds so-to-speak by using the zulu as both the nagura base and the final finisher.

has anyone else gone this route?

so much interesting information on SRP i cant not want to try new things. so far my 1-3-5-8-12 synthetic progression is making fine shaving edges (for me). but thought id finally take the plunge into some naturals - i.e. nagura, coticle etc.

as always, appreciate any advice.
thanks.
-s.