Dummynet with Dynamic IPFW Rules

[RW]

I've been looking into using Dummynet for outgoing traffic, and I've found it 
hard going because the tutorials and how-to's deal with it in isolation, 
without indicating how it would be used in a real firewall.  They generally 
suggest setting  net.inet.ip.fw.one_pass=1, which as I understand it, implies 
that any packet passed into dummynet is passed statically though the 
firewall.  

I want to keep my existing dynamic rules, and it seems that one way would be 
to keep net.inet.ip.fw.one_pass=0 and follow each dummynet rule with a skipto 
rule that uses an identical  test. So when the packet emerges from dummynet 
it skips the other pipe and queue rules, and hits the check-state.

Something like this:
--------------------------------------------------------------------------------------
...
#prioritize small ack packets
0500 queue 1      tcp from any to any out via vr0  tcpflags ack iplen 0-80 
0501 skipto 1000 tcp from any to any out via vr0  tcpflags ack iplen 0-80 
#prioritize ntp
0600 queue 1       tcp from any to any out ntp via vr0   
0601 skipto 1000  tcp from any to any out ntp via vr0

<other queuing rules>

1000 check-state
1010 deny tcp from any to any in established
1020 allow tcp from any to any out setup keep-state
1030 allow udp from any to any ntp out keep-state

<other statefull rules>
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Will this work? And is it the best way to handle this problem?  It seems a bit 
clumsy.