Uh, I don't think so:
Oct 4 13:54:50 tmm tmm[29897]: 01220001:3: TCL error: Rule Firewall_Select-rule - expected integer but got "clientside" while executing "LINK::qos clientside 3"
I don't get any errors when syntax is (adding serverside/clientside doesn't seem to change anything)
IP::tos 16
or
LINK::qos 3
But it is never anything but zero:
setting IP::tos to 16
Oct 4 13:59:24 tmm tmm[29897]: 01220002:6: Rule Firewall_Select-rule : Client 10.10.1.1 using eBiz-Firewall, DSCP is 0
setting LINK::qos to 3
Oct 4 13:58:05 tmm tmm[29897]: 01220002:6: Rule Firewall_Select-rule : Client 10.10.1.1 using eBiz-Firewall, COS is 0