Standard for CW, CCW on pot schematic?
This makes me think that the way the wiper arrow points is the CW
  side? Is that always so?


In my experience, no.

FWIW, IEEE Std. 315-1975 Graphics Symbols for Electrical and Electronics Diagrams, paragraph 14.2.5 "Rotation description (applied to a resistor)" states that the letters "CW" may be placed at one end of the potentiometer symbol to indicate the "position of adjustable contact at the limit of clockwise travel viewed from the knob or actuator end unless otherwise noted." To create a rheostat from a potentiometer, the designer is free to connect the pot's wiper arm to either end, as deemed appropriate by the designer; there is no requirement to connect the wiper arm to the "CW" end only.



FWIW2, based on my experiences and personal preferences, a best practice when implementing rotary controls like pots, rheostats, quadrature encoders, etc. is this: whenever possible, wire the control so that turning the control's adjustment in a clockwise (CW) direction increases the intended/labeled end effect--increases the amplifier gain, increases the lamp intensity, increases the sound level, etc., and turning it counter-clockwise (CCW) decreases the end effect. That's the assumption most end users, technicians, engineers, etc. will make regarding the control's CW vs. CCW operation. Of course there will be sensible exceptions to this practice. For example, my car's turn signal lever has a rotary control that adjusts the instrument cluster's illumination intensity. That rotary control increases the intensity when I turn it CCW, probably because in that particular orientation turning the knob CCW to increase the intensity just "feels more natural" to the driver.