If a pain taster is wielding a chakram in melee can they forego the Reflex save and take the damage to gain the benefits of Masochism?
Chakram: The chakram is a simple, elegant, and highly portable thrown weapon. It is a flat, open-centered metal discus with a sharpened edge.
Benefit: You can wield the chakram as a melee weapon, but it is not designed for such use; you take a –1 penalty on your attack roll with the weapon and must make a DC 15 Reflex save or cut yourself on the blade (half damage, no Strength modifier). You do not need to make this save if wearing heavy armor.
Masochism: You have a perverse tolerance for pain that grants you a +4 circumstance bonus on saving throws against pain effects (such as that caused by symbol of pain or other effects especially noted to cause pain) and gives you damage reduction 5/— against nonlethal damage. You gain a +1 circumstance bonus on attack rolls and weapon damage rolls anytime you have sustained lethal damage in the previous round (whether self-inflicted or otherwise).
GM call. It's only explicitly stated that you can give up saving throws against spells. That's in the magic section. There is no general rule.
Thanks Ximen.