Is an Ipad a good choice for me?

I am thinking of trading my laptop in for an Ipad.

I will be travelling a lot and much as I love my current laptop but people keep telling me an Ipad would be so much lighter and more flexible.

My main usage for laptop is based around graphics software, with photoshop and painter 12 being right at the top. Would an Ipad run these programs easily? I have to admit having seen that you can buy a tool to paint directly onto the screen I am intrigued but as I have never used mac products before I am wary of parting with so much money. Also the screen size could be an issue when working on images. Are there any designers out there on fluther who have made the jump?

Any thoughts?