I've enjoyed using hijinksensue's https://www.thingiverse.com/thing:3445849, but needed a version with better lefthanded operation.
Haven't had a chance to print it out just yet, but don't forsee any issues.
Exterior_Lefthanded_Smart_wallet.stl | 130.2KB | |
Interior_Lefthanded_Smart_Wallet.stl | 75.2KB |