[Obsolete] Quickdraw Vs Snapshot Vs Quickdraw + Snapshot
I don't have the stats but this is a good visual of the differences in ADS speed when using Snapshot or quickdraw or both. As it happens, having both provides no noticeable benefit to scope speed, but does help with ready speed. But quickdraw does increase ADS speed as a side effect of buffing the sniper's handling.
I just uploaded a much better version of this.