It looks like it would be worth a try. A used one may be a great deal - Line 6 amps typically are not in high demand on the used market.
Yes, could be worth trying for a decent home solution.
The question is, if you can bypass everything (amp models, effects etc.) on the Spider.
IIRC it has an aux in but I'm not 100% sure.
My Line 6 days are long gone. 
My Line 6 days are long gone, too (I didn't have to change my name, though....LOL!)
It has an XLR mic in that would bypass amp modeling .
Ah, you remember... the days...
You got that 'nearly' right. 
Ah, you remember... the days...
I remember it well. I was so happy that they took my suggestion to add the Jubilee to the Vetta, until I listened to it. It sounded and felt no closer to it than the amps already in it.
These ARE the good old days!
Did you try the kemper with the spider Jam? I'd be interested in the results.
