Eyepiece projection vs prime focus with a barlow

[jnb]

Is there any reason to prefer eyepiece projection over prime focus with a barlow, or vice versa, if I am trying to get a larger image scale?

I was looking at the options and a decent 2" apochromatic barlow will cost me a couple of hundred. On the other hand a Baader Hyperion would cost me £95, with a set of extension tubes I can use it to get a range of image scales, they are threaded for a direct connection to a camera under the eyecup and I can still use it as an eyepiece if I am not imaging. I am looking at 2" options because if I use a 2" barlow it makes connection to the scope and camera easier.

So is there any good reason why eyepiece projection doesn't seem to get mentioned very often as an imaging option?

[ecuador]

So is there any good reason why eyepiece projection doesn't seem to get mentioned very often as an imaging option?

The simple answer is yes.

You are creating a false dilemma. You are comparing eyepiece projection with an expensive apochromatic 2" barlow. However, an inexpensive 1.25" barlow will still give you better results and easier mounting than an eyepiece + extension tubes.