Tiger
Some stalls can be very vicious, e.g. departure stalls at high power settings resulting in the aircraft being thrown around violently - so don't be under the impression that they are all as comfortable as normal stalls.
I've never heard of a Tiger spinning in from side slipping, but that does not mean it could not happen - you need to ask a Tiger expert; I don't have any Tiger time, but normally to keep slips safe, you just keep the airspeed safe (i.e. somewhat higher than the best glide speed) - it's often said to be a little dangerous to slip high winged a/c with flaps extended because of the aerodynamics, but I must admit that I don't know about any ill effects with biplanes through lack of experience.
Slipping is a very useful skill unknown to many PPLs and is a great way of losing height quickly in spamcans, as well as Tigers!
Cheers
F3G