I know Alessi makes a model, and I think Gary B. makes holsters for that model, but as I recall he's not taking orders at the moment.
Are you looking for IWB ot OWB?
Milt sparks maked the Versa Max II for the P7 as shown on the website.
The following makers also support the P7
Pale Horse Holsters and Belts, I like the looks of the Side Winder for OWB
PWL looks promising