[the_cake]

Put in demoman.cfg:

currentweapon
alias demoswitch1 "slot5; alias currentweapon slot5; alias demoswitch demoswitch2"
alias demoswitch2 "slot4; alias currentweapon slot4; alias demoswitch demoswitch1"

Put in autoexec.cfg:

alias demoswitch demoswitch1
bind KP_INS demoswitch


This will break if you put them in the wrong place.

The special nine's weird config friendly version!:

bind MWHEELDOWN "invprev; alias demoswitch demoswitch1"
bind MWHEELUP "invnext; alias demoswitch demoswitch1"
alias demoswitch demoswitch1

alias demoswitch1 "slot5; alias demoswitch demoswitch2"
alias demoswitch2 "slot2; alias demoswitch demoswitch1"
bind KP_INS demoswitch