Importing from Blogger into WP is easy. However, Blogger blogs on blogspot do not allow hotlinking to images from outside blogspot.
However, images on non-blogspot Blogger blogs will import fine into WordPress.
Blogger does allow you to change your blogspot blog to a hosted-elsewhere blog.
Question: If you convert a blogspot blog to a Blogger blog hosted elsewhere, will the images come too? If so, then you can import the blog AND images into WordPress no problem.