Draftstable and writing on the ipad

It seems like draftstble is great for drawing, but I am wondering if anyone has experience using it for writing with the pencil and annotating documents. Having the ipad on the table flat is a little uncomfortable and I think that if it were raised up a little, it might be a little more comfortable. What i am afraid of is that you would have to tilt to the side slightly for the writing to be comfortable; if you left it straight you arm would would have to try a bend to match it. Not sure if this make sense.
Thank you