Buy the Smith now, get a Twinmaster Allrounder/Top/Sport/Match later, don't get a trainer, instead get one of the above models, if you go for an allrounder with ambi grip you have an upgrade path - the target grips bolt on, the PCP kit bolts on,
Regards,
Nick
Edit- Forgot to mention you can tune the PCP Rohms for Pistol FT, the trigger becomes too heavy for multi-shot but the mod is reversible.
Edit- If it's for IPAS get the Smith