I did a barleywine/mild combo that came out alright. It was my first (and only) partigyle attempt. If it's your first time, I'd recommend having some DME handy in case you don't hit your gravities, I'm glad I did.
I have done an DIPA and Blonde before. I am currently fermenting an English Barleywine and ESB partigyle. Next up will be a Belgian Golden Strong Ale and a Kolsh. My only tip is to try and reserve some of the first runnings for your "small beer". It is nice if you pick a "big" beer that includes some sugar in the recipe. It helps to boost the gravity and lets you use some of your first runnings for the second beer.