ProtoPasta makes their SSPLA with powdered steel. So while it does contain the metal, it is meant for cosmetics more than structural applications. Either way, it is still fun!

Printed at 225c/60c. I had to raise my lid an additional 19mm, now sitting as high as 103mm from the top of my SD2 frame. Since I have a spool mount directly over my extruder where the filament feeds through some PTFE, I found the shorter distance broke at any attemp of feeding the filament. So if you want to try this be sure your filament has a path of least resistance. Seriously...stuffs like a dry twig.

Some of the uneven gouges were from experimenting with finishing techniques.
1) Gouges were from trying a polishing wheel attachment for my Dremel. It certainly shaved some time off hand sanding, but it grips to corners and curves too well for it to really be used in an accurate application unless you have a very steady hand.
2) 600 grit sandpaper didn't take out nearly as many lines as the Dremel (surprise!), but gave me that metaled look ProtoPasta hyped. The pic doesn't do that part much justice.
If you decide to attempt polishing with a power tool, be sure you use safety glasses . I was quickly reminded that it contained some metal, and eyeballs do not like stuff like that getting in there as I found out.

Before polishing, I printed the same handle in ABS to compare raw results.
The SS PLA is definitely heavier than the ABS, and feels stronger even at the same layer height, scale, and infill.
Of course, the SS is intended for cosmetics and not for a application that requires solid metal.
It extruded very smooth, but I noticed a tad bit of lifting only on the first 2 layers. All I did was press the end back down and everything turned out as it should.
This is pretty cool stuff, and I will probably buy more.

Stainless Steel pla printed really well on an e3dv6. A fan is an absolute must. Found the sweet spot at about 230 c and the glass bed at 70 c. I started off trying no fan then half way through the print turn the fan on 100%. The fan being on is crucial with this.It didn't shine up as much as I had hoped yet. But then again I may not have the proper buffing pad for it but I'll enclose a pic.(the nozzle broke the little key chain part off my Marvin in the pic)

The magnetic iron actually printed better at a lower temperature. At 230 it wanted to bubble or ooze terribly bad. I found it to run best all the way down to about 208 C and the bed on 70 c.
The magnetism is great. I can put my magnetic Marvin upside down on any magnet and it will stick. It also shines up some where it has the iron in it.

Overall I liked them both and was pretty pleased after I made some adjustments. It's a little pricey but I think you get what you pay for.