Eat your own dog foodYeah, that's what we're doing, eating our own dog food.
We just migrated our Plastic SCM internal server from an old Fedora Core 4 (yes, that oold... but is our server and we love it!) running on x86 hardware (Xeon) to a SPARC Solaris 10 box. A big endian 64 bits SPARC box!! :)
The previous configuration was running Mono + Bohem GC and Plastic storage was an external Oracle database (yes, separate Plastic and database servers, again, eating our own stuff), and now the configuration is as follows:
So far the old iron is behaving really well, it's only been one day in real production (after weeks of load testing and so on, of course) but no known issues yet. It's not as fast as our previous server but that's because we're not using very strong hardware. I'd like to see it working on a beat like this.
Although obviously SPARC hardware is not the most demanded at all, we're committed to support it since specially big customers tend to ask for at least a few servers running it... It's been supported for years already but now we're really about to have better packaging and so on, I expect to have an installer on the coming weeks (so far we installed manually).
Will let you know how it goes... :P