https://kotobank.jp/word/巾着切-2030673
nikk
きんちゃく‐きり【巾着切】

巾着切り	1659	0.1%
巾着切	672	0.0%


some (by no means all) twitter uses giving スリ explicitly:
元巾着切り(スリ)の"完治"、町医者
脇役ですが巾着切り(スリ)の宇之
巾着切り(スリ)の完治らを配
「巾着切（スリ）の遊戯」

sankoku: 古風　すり

daijs:
https://kotobank.jp/word/巾着切り-481526
「掏摸すり」に同じ。


スリ	937752	98.8% couldn't say what % is pickpockets, but...
掏摸	5273	0.6%
掏り	3461	0.4%
掏模	117	0.0%
巾着切り	1659	0.2%
巾着切	672	0.1%

sankoku says [dated], usage certainly appears that way to me (often used in conjunction with historical imagery, edo-era pickpockets, etc.  but still understood, so some people on twitter seem to use it for what it is, perhaps for effect).

@@ -5,0 +6,3 @@
+</k_ele>
+<k_ele>
+<keb>巾着切</keb>
@@ -11,0 +15,2 @@
+<xref type="see" seq="1567450">スリ</xref>
+<misc>&dated;</misc>