[grumpy]

mylesdw,
With flux core you will only get a slight bit more spatter than with gas, but with a 4" heavy wire brush on a 4 1/4" small grinder the majority of spatter can be knocked off easily.
Will require a very good ground preferably at the plug point if you are distance of 50' plus from your entrance ground. If the issue of pulsing or sticking like an old stick machine comes up it's your ground causing it, THE MOST COMMON problem of MIG units.
Also buy the wire cleaning/lubricating adapter that attaches before the feed head to make your feed smoother.
Tip Dip will be needed and extra tips will also be used great due to the additional spatter
grumpy