If you manage to get a high flow DPF for the Mk6, then you've already got one sold for an Octavia vRS. 
On the topic of soot, if you sit behind a Kia Sorento CRDi and watch for soot, there isn't any (I had one)
No DPF either... I know that for a fact, it blows soot when its running out of fuel and the engine is chugging. (Was emergency in the bush - unavoidable)
I'd be more than happy to do a DPF delete on my car - and indeed plan to - because I expect there to be little to no soot in the first place... Also, dat noise.

On the topic of soot, if you sit behind a Kia Sorento CRDi and watch for soot, there isn't any (I had one)
No DPF either... I know that for a fact, it blows soot when its running out of fuel and the engine is chugging. (Was emergency in the bush - unavoidable)
I'd be more than happy to do a DPF delete on my car - and indeed plan to - because I expect there to be little to no soot in the first place... Also, dat noise.

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