Do you compose music in concert pitch or transposed?

Do you compose music in concert pitch or transposed?

This question might use some explanation.
For instance: when you write for wind quintet, which includes two transposing instruments, namely the Clarinet in Bb and the Horn in F, do you write the music like it sounds or do you immediately transpose it?
Or do you type a short passage in your notation program and then look after it in the 'transpose mode.'

I do my best to keep things in a transposed score, only going to concert pitch when the passage or harmony I'm writing is really unintuitive.

The problem with writing in concert pitch is that it does not clearly show the different registers and with that the characteristics.

7 minutes ago, Maarten Bauer said:

The problem with writing in concert pitch is that it does not clearly show the different registers and with that the characteristics.

 

It doesn't need to, really. You should always have an idea of the final transposed register when writing in concert, like in the back of your mind: "remember this is going to be a fifth higher..."

I write on paper first and I always transpose the pieces so I can see what will be happening on their score

I write in concert pitch then transpose after it is finished.  Thank goodness for notation software!