"Cancel Speed Restrictions"

[NickN]

From my knowledge being given this clearance by ATC allows you to climb unrestricted and ignore the height constraints of the SID. However, does that also allow unrestricted speed, even allowing over 250kts under 10,000?

The reason I ask is that this ATC normally give this approval to aircraft well below 10,000 ft and from looking at the KAT1/WOL9 departure chart it specifically says Max IAS 250 Kt Below 10000'.

I had a feeling I had seen this on the board before but the search function didn't bring anything up.