EF 70-200 f/4L non-IS now, and/or 70-200 f/2.8 IS later?

[Brendan7]

So, in the long run, is it worth having both the f/4 non-IS the f/2.8 IS?

Do you take hikes? The f/4 is better if you have to carry it handheld for a long period of time. If not, you could buy the f/4 now and sell it later and buy the f/2.8.

Or, is it more common to sell an f/4 non-IS after getting an f/2.8 IS?

I believe so.

I am something of an aperture junkie

so am I! [:P]