For most street riding quality textiles offer enough protection to keep your hide intact. If you get off at high speeds then leather is better which is why racing suits are leather however, most street get offs are statistically, according to the latest issue of Motorcycle Consumer News data, below 45 mph in which case textiles are fine and usually more comfortable in regular use.
And nothing can provide 100% protection - on my Wife's getoff in GA in '02, she had an armoured Leather/Textile combo jacket by Fieldsheer - her lowside in road-debris was roughly at 40-45mph, extreme abrasion-resistance was nearly un-necessary.
Probably would have resulted in NO injury but for the fact her VTR struck a 2-ft. boulder as she slid behind it in the leaf-filled ditch, which started her in a cartwheel where she struck the controls of the bike
below the left shoulder-armour which shattered the controls and her left humeral-head into 5-8 pieces (which thankfully remained mostly-intact). No other major injuries. But it was painful, to be sure.
ALL of the damage to her gear and clothing was from the EMTs - they cut every piece of clothing off her but her panties (Seriously!). When you crash, fold your Dignity up and stuff it into your wallet - you won't be needing it the rest of the day.............