I carry the steel mod 36 in an ankle rig all the time- the two keys to this are :
1) get a good holster- my fav is Alessi and it will cost over 100 bucks- but I have been using the same one for 20+years
2) practice draw techniques alot- find a method that works for you and practice about 500 or so draws- you'll be amazed how fast they really can be- I am often challenged on they are slow, clumsy etc. But when doing apples to apples comparison with a properly concealed belt holster I can draw a gun from an ankle rig just as fast as most people using a belt rig.