SFP copper reliability in XGS87?

Question

I get the impression that the SFP port is more for HA applications, but it now appears that our perfectly-sized XGS87 will be a port short if we get a second ISP. So the thought arises about buying an SFP copper module (say like https://www.fs.com/products/34976.html) to add that extra port. Are there any known issues with adding an additional RJ45 copper ethernet port via F1 causing issues or complications?

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Wayne Folta · Accepted Answer

I was waiting for confirmation, but decided to just get a Cable Matters SFP to copper ethernet adapter -- about $20 US I think -- and plugged it in. It seems to be working. At least I was able to plug my laptop into the SFP port and view directories on the Apple Time Capsule connected to Port 4. The other three ports are definitely working. 
 So it appears that the XGS series (unlike the XG series) doesn't tie SFP and ethernet ports. Which means I'll be able to have two ISPs, VOIP, an APX320, and an NAS all on an XGS87. Woot! 
 I was a little nervous about an inexpensive SFP module -- name-brand ethernet adapters can cost many times more. But I was also nervous about cut-rate adapters too. (And may yet experience problems.) But I've had good results with Cable Matters ethernet cables and figured I'd give them a go and, so far, it's working well. 
 Again, this is different from how lower-end XG devices handled built-in SFP ports. So even the bottom-of-the-line XGS87 can expand with an SFP module.

SFP copper reliability in XGS87?

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