Defina suas rotas expressas como propriedades

express = require "express"
request = require "request"

app = express.createServer()

defaultResponse = (req,res,next) -> res.send req.originalUrl.substring(1)

app.get.propertyRoute = defaultResponse

app.get '/regularRoute', defaultResponse

app.all "/*", (req, res, next) ->
  if r = (m = app[req.method.toLowerCase()])[req.originalUrl.substring(1)]
    r.apply @, arguments
  else
    m req.originalUrl, arguments...

app.listen 8909

request {url: "http://localhost:8909/propertyRoute", method: 'GET'}, ->
 console.log arguments[2]

request {url: "http://localhost:8909/regularRoute", method: 'GET'}, ->
 console.log arguments[2]

resultados:
$ propertyRoute
$ regularRoute