OK to use 2MT sleeve on 1MT?

[pgrbff]

Are there any reasons not to use a 2MT sleeve on a 1MT drive?
Obviously if I was buying new I'd buy the 2MT but if I find a 1MT bargain? Do the sleeves work well?

 

[Phil Pascoe]

I have seven or eight. Perfectly OK for our usage. Drill bits up to 14mm iirc only come in 1MT and save using a chuck on the tailstock.

 

[Katomi woodsmith]

I bought mt1 before I knew the difference, I have since bought a sleeve mt1 to mt2 so the I can use the live centers
When used will post as how it went