ha! no pressure then!
I am not totally convinced that they are a "pure" breed, however, given their blue legs, the top knot and very erect tail, i would say that there is definately a lot of gold spangelled appenzeller about them.
see this picture below as an example

- Picture located on the web at http://mangrovepoultry.com/images/Gold_Spangled_Appenzeller_Hen.jpg
- Gold_Spangled_Appenzeller_Hen.jpg (68.85 KB) Viewed 340 times
the reason i dont think that they are totally pure is due to the fact that a true appenzeller has an erect top feathering, yours appear to be flat, however they may have had an off day! Appenzeller usually lay around 100 smallish white eggs, usually towards the start of the season then go off lay
we keep the silver version and i have attached a picture below of one of last years chicks at 10 weeks as a comparision

- silver appenzeller chick
- silver appenzeller chick -2- 2009.JPG (42.22 KB) Viewed 338 times
also note on your birds the feathers are more "laced" with black not spotted with black as in the breed standard, and the cheeks are red, not white. Red cheek patches would suggest to me that these hens are likely to lay a brown egg not white. However, as Katie says, does it really matter as they are beautiful birds, and are just that bit more special looking than th ebog standard "wee brown hen" - shhh dont tell my ex-batts i said that!
i also note that you say that the one tends to like to roost in the playhouse. that doesnt surprise me. appenzellers are very capable flyers and will happily go to a high spot (or near inaccessible spot) just for laughs at bed time. They are just as quick on their feet too so if they get out and make a run for it, put your running shoes on!