Got a hands-on with this device. Don't like it: no ssh access, CPU at 100% with 500/500mbps, max throughput capped at 390mbps, no DNS flexibility, etc. Poor thing.
Sitecom released a new firmware (v1.1) the day before yesterday and it has SSH now so that's a start.
I'm in the middle of reviewing this device (I can keep it in exchange for a review

) and so far it's a mixed bag. The hardware has great potential but at the moment it's held back by the software it is running. The Greyhound has a custom OpenWRT firmware based on Attitude Adjustment (source-code is available
here) with some patches from the
QSDK to support the QCA hardware inside this device. The biggest issues for me are the numerous bugs in the custom skin and the limited selection of available packages (because it's using the IPQ806x architecture). I tried to install some packages from the
snapshot repo but that didn't work out and I think I have to resort to building the desired packages myself

.
Hardware-wise the Greyhound is pretty good. Sleek looking on the outside although it's a bit on the big side coming from a TP-Link WR1043ND v1. The audio ports are a gimmick but I have to admit the sound quality is great! (tested with Sennheiser HD555 and flac audio samples via DLNA). It's a shame I cannot place the router near my speakers so this feature isn't very useful to me, CC Audio would be a better option. WiFi performance is also great but that's not too difficult coming from an old 802.11N 2.4GHz-only router. WAN performance indeed is limited (no problem for me though) but I was under the assumption its more an OpenWRT issue and not so much a hardware limitation but I could be wrong.
I hope the Greyhound can benefit from the work that is going on in the trunk to support the
TP-Link Archer 2600 and the
Netgear R7500V2/
D7800, three devices that are practically identical to the Greyhound. As far as I can see they all use the same SoC/architecture (IPQ8064), switch (QCA8337), radio's (2x QCA9980) and are all equipped with 512MB RAM. Comparing to either the Archer 2600 or the R7500 the Greyhound is too expensive. If you're looking for a future proof MU:MIMO router with OpenWRT support (somewhere in the near future?) I think that for now both the TP-Link or the Netgear are better options.