Well I found Tundra and it looks really good

. Thank you for pointing me in it's icy direction!
But I'm still left wondering about my initial question.
Can I ask for some clarification please?
Does movement on ice
still have –4 penalty with all Acrobatics and Maneuver checks or does the errata intend for that to be
replaced by the effects listed for knee deep water?
Reading further I now think that movement assisted by roller skates or ice blades should now be some sort of Maneuver check if your doing more than calmly moving forward.
Also reading up on these rules I did notice that you can only ever suffer a fall if you fail a Balance check.
You can't suffer a fall if your riding an animal, a personal vehicle or on foot and fail a Maneuver Check.
That just doesn't seem right to me...
Please can anyone help me with this?
Thanks again.