SNS3Guppy,
Under what permission do you do that?
that is a good question. Over here in Europe there are no strict regulations that force 250kts below 10,000', as far as I know (at least here in Italy), but in the USA no controller can issue deviation from an FAR which specifically says that every aircraft *must* be flying slower than 250kts below 10,000'.
I would be curious to know if you really keep the leading edge flaps out until 10,000' during climb when you're in the USA.
Ciao, Luca